Conductive terminal and electric connector provided with same

Abstract

The utility model discloses a conductive terminal and an electric connector provided with the conductive terminal, which are used for being in butt joint with a butt-joint terminal, and comprises a butt-joint part with a plug-in port, the butt-joint part is provided with a bottom wall, a first side wall and a second side wall, a first connecting wall is bent and extended from the first side wall, a main elastic sheet with a contact area is bent and extended from the first connecting wall, and a second connecting wall is bent and extended from the second side wall. A second connecting wall is bent from the first side wall, an auxiliary elastic piece is bent and extends from the second connecting wall and is partially overlapped with the main elastic piece, the top wall is located above the first connecting wall, the top wall and the second side wall are torn together to form a locking arm, an upper blocking face and a side blocking face are formed on the locking arm, and the top wall is provided with a protection area. When the butt-joint terminal is inserted into the insertion port, the butt-joint terminal abuts against the contact area, the main elastic piece is stressed to move upwards and abuts against the auxiliary elastic piece, and at least part of the protection area is located over the abutting position of the main elastic piece and the auxiliary elastic piece. Therefore, reverse lapping of the main elastic piece and the auxiliary elastic piece is avoided, and the stopping strength of the locking arm is enhanced.

Description

Technical Field

[0001] The utility model relates to a conductive terminal and an electrical connector provided with the conductive terminal, in particular to a conductive terminal with a cylindrical docking portion and an electrical connector provided with the conductive terminal.

Background Art

[0002] Chinese Patent with the application number CN202220707124.3 discloses a conductive terminal, which has a cylindrical docking portion. The docking portion has an insertion opening for inserting a docking terminal, and an upper surface of the docking portion is provided with a contact elastic piece and an elastic arm located behind the contact elastic piece. The contact elastic piece and the elastic arm extend towards each other in the front-rear direction. In the up-down direction, a free end of the elastic arm overlaps above a free end of the contact elastic piece, and there is no obstruction at an overlapping portion of the contact elastic piece and the elastic arm. A contact area is further provided on a lower surface of the contact elastic piece for docking with the docking terminal. A fourth wall of the docking portion is also torn to form a limiting cantilever, and the limiting cantilever can position the conductive terminal in an insulating housing, so that the conductive terminal can be docked with the docking terminal.

[0003] However, since the elastic arm only overlaps the free end of the contact elastic piece in the up-and-down direction at its free end, this will result in too small an overlapping area between the elastic arm and the contact elastic piece. Moreover, since there is no shielding at the overlapping part of the contact elastic piece and the elastic arm, when the docking terminal is inserted into the insertion port and abuts against the contact area, the docking terminal will generate an upward pushing force on the contact elastic piece, causing the contact elastic piece to displace upward and push against the free end of the elastic arm. In this way, the free end of the elastic arm will tilt upward as the contact elastic piece offsets. When the contact elastic piece offsets too much, the free end of the contact elastic piece will cross over the free end of the elastic arm upward and be located above the elastic arm, thus forming a reverse lap joint. And when the docking terminal is pulled out, the elastic arm is no longer subjected to the pushing force of the contact elastic piece, so that the free end of the elastic arm returns downward earlier than the contact elastic piece, and blocks the contact elastic piece from returning to its original position. When the docking terminal is inserted again, due to the interchange of the up-and-down positions of the contact elastic piece and the elastic arm, the contact elastic piece will be blocked by the free end of the elastic arm and cannot be docked with the docking terminal, seriously affecting the electrical connection between the conductive terminal and the docking terminal, unable to perform multiple pluggings and unpluggings, reducing the service life of the electrical connector. In addition, since the limiting cantilever is only torn from the fourth wall, the strength of the limiting cantilever is weak. When the operator operates incorrectly and pulls the conductive terminal backward, it is very easy for the limiting cantilever to fold forward, and then the conductive terminal will be pulled out of the insulating housing backward, and then the conductive terminal and the docking terminal cannot be stably docked.

[0004] Therefore, it is necessary to design a conductive terminal and an electrical connector provided with the conductive terminal to solve the above technical problems.

Utility Model Content

[0005] The purpose of the present utility model is to provide a protection area directly above the abutting position of the main elastic piece and the auxiliary elastic piece, so that the protection area can block the excessive upward displacement of the main elastic piece and the auxiliary elastic piece, thereby avoiding the reverse lap of the main elastic piece and the auxiliary elastic piece, ensuring good electrical connection between the conductive terminal and the docking terminal, and forming a locking arm by tearing the top wall and the second side wall together, so that the locking arm has an upper blocking surface and a side blocking surface, thereby enhancing the blocking strength of the locking arm, a conductive terminal and an electrical connector provided with the conductive terminal.

[0006] In order to achieve the above object, the present utility model adopts the following technical solutions:

[0007] A conductive terminal for connecting with a docking terminal, characterized in that it comprises: a cylindrical docking portion, the docking portion having a bottom wall and a first side wall and a second side wall connecting opposite sides of the bottom wall, a first connecting wall extending and bending from the first side wall toward the second side wall, the first connecting wall and the bottom wall are arranged opposite to each other in the up-down direction, and the first connecting wall, the first side wall, the second side wall and the bottom wall are jointly arranged to form an insertion interface for the docking terminal to be inserted backward, a main elastic sheet extending from the first connecting wall in the front-to-back direction and bending downward, the lower surface of the main elastic sheet having a contact area, a second connecting wall bending from the first side wall toward the second side wall, the second connecting wall and the first connecting wall are connected to the first connecting wall The connecting walls are arranged at intervals along the front-to-back direction, and a secondary spring sheet is bent and extended from one end of the second connecting wall toward the main spring sheet, and the secondary spring sheet partially overlaps with the main spring sheet in the up-down direction, and a top wall is connected to one side of the second side wall, and the top wall is located above the first connecting wall, and the top wall and the second side wall are torn together to form a locking arm, so that the locking arm is formed with an upper blocking surface and a side blocking surface, and the locking arm can be elastically deformed in the left-right direction, and the top wall has a protection zone; when the docking terminal is inserted into the plug interface from front to back, the docking terminal abuts against the contact zone, the main spring sheet abuts against the secondary spring sheet, and the protection zone is at least partially located directly above the abutting position of the main spring sheet and the secondary spring sheet.

[0008] Further, the first side wall includes a front side portion, a middle portion and a rear side portion, the upper end of the front side portion is connected to the first connecting wall, the upper end of the rear side portion is connected to the second connecting wall, the first side wall has a plurality of feed holes, the rear edge of the front side portion is spaced from the middle portion by one of the feed holes, and the front edge of the rear side portion is spaced from the middle portion by one of the feed holes.

[0009] Furthermore, one end of the top wall close to the first side wall is bent downward and extends to have a stop portion and a blocked portion located behind the stop portion, the stop portion is aligned with the top end of the middle portion, the blocked portion is located above the second connecting wall and extends backward beyond the second connecting wall, the second connecting wall extends downward at an angle to avoid the blocked portion, and the rear end of the second connecting wall in the up and down direction is lower than the middle portion, and the middle portion is shielded on one side of the contact area in the left and right direction.

[0010] Furthermore, the docking portion has an anti-foolproof portion, one end of which is connected to the bottom wall, and the other end is torn from the front end of the second side wall and bent downward to extend, and the second side wall is formed with a notch by tearing, and in the left and right direction, the notch is arranged opposite to the front side portion.

[0011] Further, the second connecting wall is located behind the first connecting wall. The auxiliary elastic piece has a first bending section that bends and extends forward from the front end of the second connecting wall, a second bending section that bends and extends forward from the front end of the first bending section, and an abutting section that extends downward and bends from the front end of the second bending section. When viewed in the up-and-down direction, the first bending section is offset from the main elastic piece. The second bending section and the abutting section both overlap with the main elastic piece, and the abutting section is used to abut against the main elastic piece. The first bending section has a first bending point, the second bending section has a second bending point, the top wall has a relief groove, the first bending point is exposed in the relief groove, and the protection area at least partially shields above the second bending point and above the abutting section.

[0012] Further, the abutting section has a free end. The protection area at least partially shields above the free end, and the distance between the free end and the protection area in the up-and-down direction is greater than the distance between the second bending point and the protection area.

[0013] Further, the locking arm is bent and extended from front to back and away from the auxiliary elastic piece. One side edge of the relief groove is inclined to gradually move away from the end section of the locking arm to provide relief for the elastic deformation of the locking arm. On the side of the auxiliary elastic piece close to the locking arm in the left-and-right direction, there is a relief inclined surface that extends downward from the upper surface of the auxiliary elastic piece. When the docking terminal is inserted into the insertion opening from front to back, the auxiliary elastic piece is pushed upward by the main elastic piece, and the relief inclined surface is used to prevent the auxiliary elastic piece from being scratched against the side edge of the locking arm close to the auxiliary elastic piece in the left-and-right direction when the auxiliary elastic piece moves upward.

[0014] In addition, an electrical connector for docking with a plurality of docking terminals, characterized in that it includes: an insulating body having a plurality of terminal receiving grooves penetrating in the front-rear direction; a plurality of conductive terminals are respectively received in the plurality of terminal receiving grooves, and each conductive terminal has a cylindrical docking portion, the docking portion has a bottom wall and a first side wall and a second side wall connecting opposite sides of the bottom wall, a first connecting wall extends and bends from the first side wall toward the second side wall, the first connecting wall is disposed opposite to the bottom wall in the up-down direction, a main elastic piece extends and bends downward from one end of the first connecting wall in the front-rear direction, the lower surface of the main elastic piece has a contact area, a second connecting wall extends and bends from the first side wall toward the second side wall, a secondary elastic piece extends and bends from one end of the second connecting wall close to the main elastic piece, the secondary elastic piece partially overlaps the main elastic piece in the up-down direction, the top end of the second side wall is connected to a top wall, the top wall is located above the first connecting wall, the top wall and the second side wall are jointly torn to form a locking arm, so that the locking arm has an upper blocking surface and a side blocking surface, and the locking arm can be elastically deformed in the left-right direction, the top wall has a protection area; when the conductive terminal is docked with the docking terminal, the docking terminal abuts against the contact area, the main elastic piece abuts against the secondary elastic piece, and at least part of the protection area is located directly above the abutting position of the main elastic piece and the secondary elastic piece.

[0015] Furthermore, the insulating body is recessed downward with a plurality of fastening grooves, each fastening groove is located on one side of the corresponding terminal receiving groove in the left-right direction and communicates with the terminal receiving groove, the inner bottom surface of each fastening groove is higher than the inner bottom surface of the corresponding terminal receiving groove in the up-down direction, the locking arm has an upper extension portion and a side extension portion connected to one side of the upper extension portion, the upper blocking surface is disposed on the rear side edge of the upper extension portion, the side blocking surface is disposed on the rear side edge of the side extension portion, and the lower side edge of the side extension portion bends downward and inward to form a hook. When the conductive terminal is inserted into the corresponding terminal receiving groove, the locking arm extends into the fastening groove, and the upper blocking surface, the side blocking surface and the rear end of the hook all abut against the inner wall surface of the fastening groove, and there is a gap between the lower surface of the hook and the inner bottom surface of the fastening groove in the up-down direction.

[0016] Furthermore, there is a secondary locking member. The insulating body is recessed with a limiting groove from top to bottom. The limiting groove is longitudinally arranged in the left-right direction and communicates with a plurality of the terminal receiving grooves. One end of the top wall close to the first side wall bends and extends downward to form a stopping portion and a blocked portion located behind the stopping portion. The stopping portion aligns with the top end of the first side wall. The blocked portion is located above the second connecting wall and extends backward beyond the second connecting wall. When the secondary locking member is inserted downward into the limiting groove, the rear end of the second side wall, the rear end of the top wall and the rear end of the blocked portion are used to abut against the secondary locking member.

[0017] Furthermore, the secondary locking member has a base portion and two elastic arms connected to the left and right sides of the base portion. On one side of each elastic arm close to the other elastic arm, two clamping blocks are arranged at intervals in the up-down direction. A blocking block extends downward from the lower end of the base portion. A plurality of protrusions protrude from the rear end of the blocking block. When the secondary locking member is in the initial locking position, the rear side wall of the limiting groove abuts against and restricts the downward displacement of the protrusions. The lower clamping block in each elastic arm in the up-down direction clamps the insulating body. The conductive terminal can be inserted into the terminal receiving groove in the front-rear direction. When the secondary locking member is in the final locking position, the blocking block extends into the terminal receiving groove to block the rearward displacement of the docking portion. The protrusions are located below the rear side wall of the limiting groove, and the projection of the protrusions and the projection of the rear side wall of the limiting groove partially overlap in the up-down direction. The upper clamping block in the up-down direction clamps the insulating body.

[0018] Compared with the prior art, the conductive terminal designed by the present utility model and the electrical connector provided with the conductive terminal have the following beneficial effects:

[0019] The conductive terminal of the present utility model and the electrical connector provided with the conductive terminal have a main elastic piece and a secondary elastic piece. Along the up and down direction, the secondary elastic piece partially overlaps with the main elastic piece. One side of the second side wall of the docking part is connected with the top wall, and the top wall is located above the first connecting wall. The top wall has the protection area. When the docking terminal is inserted into the insertion port from front to back, the docking terminal abuts against the contact area, and the main elastic piece abuts against the secondary elastic piece. At least part of the protection area is located directly above the abutting position of the main elastic piece and the secondary elastic piece. The main elastic piece pushes the secondary elastic piece upward. When the secondary elastic piece is upwardly offset to contact the protection area, the protection area will block the further upward displacement of the secondary elastic piece and the main elastic piece, thereby avoiding the situation that the main elastic piece moves upward beyond the secondary elastic piece and causes the main elastic piece and the secondary elastic piece to be reversely overlapped, ensuring good electrical connection between the conductive terminal and the docking terminal, enabling multiple pluggings and unpluggings, improving the service life of the electrical connector. Moreover, the top wall and the second side wall are jointly torn to form the locking arm, so that the locking arm has an upper blocking surface and a side blocking surface. The locking arm can be elastically deformed along the left and right direction. In this way, through the settings of the upper blocking surface and the side blocking surface, the blocking strength of the locking arm is enhanced, thereby avoiding the situation that the locking arm is reversely folded when the operator wrongly operates and pulls the conductive terminal backward.

Description of the Drawings

[0020] Figure 1 is a three-dimensional exploded view of the electrical connector of the present utility model;

[0021] Figure 2 is a top view of the electrical connector of the present utility model;

[0022] Figure 3 is Figure 2 a cross-sectional view taken on A-A;

[0023] Figure 4 is Figure 2 a cross-sectional view taken on B-B;

[0024] Figure 5 is Figure 2 a cross-sectional view taken on C-C;

[0025] Figure 6 is a three-dimensional schematic diagram of the conductive terminal of the present utility model;

[0026] Figure 7 is a left view of the conductive terminal of the present utility model;

[0027] Figure 8 is a right view of the conductive terminal of the present utility model;

[0028] Figure 9 The top view of the conductive terminal of the present utility model;

[0029] Figure 10 is Figure 9 the cross-sectional view taken along D-D.

[0030] Explanation of the reference numerals in the drawings of the specific embodiments:

[0031]

[0032]

Specific Embodiments

[0033] To better understand the content of the present utility model, the present utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0034] As Figures 1 to 10 shown, an electrical connector 1000 of the present utility model is used to be docked with a pair of docking connectors (not shown, the same below). The docking connector has a pair of docking bodies and a plurality of docking terminals fixed to the docking bodies. The conductive terminal 3 of the present utility model and the electrical connector 1000 provided with the conductive terminal 3 define a front-back direction, a left-right direction perpendicular to the front-back direction, and an up-down direction. The docking direction of the electrical connector 1000 and the docking connector is defined as the front-back direction. For the convenience of understanding the drawings, the front-back direction is represented by the X-axis of a three-dimensional coordinate system, where the forward direction is the positive direction of the X-axis, the left-right direction is represented by the Y-axis of the three-dimensional coordinate system, where the rightward direction is the positive direction of the Y-axis, and the up-down direction is represented by the Z-axis of the three-dimensional coordinate system, where the upward direction is the positive direction of the Z-axis.

[0035] As Figures 1 to 10 shown, the electrical connector 1000 includes: an insulating body 1. The insulating body 1 has a plurality of terminal receiving grooves 12 penetrating in the front-back direction. A plurality of conductive terminals 3 are respectively received in the plurality of terminal receiving grooves 12. The plurality of conductive terminals 3 correspond to and are docked with the plurality of docking terminals one by one. A secondary locking member 2 is installed on the insulating body 1 to fix the conductive terminals 3 in the insulating body 1.

[0036] As Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the insulating body 1 is recessed with a limiting groove 11 from top to bottom. The limiting groove 11 is longitudinally arranged in the left - right direction and communicates with a plurality of the terminal receiving grooves 12. On the upper surface of the rear side wall of the limiting groove 11, there is a guiding inclined surface 111 which extends obliquely downward and forward to guide the secondary locking member 2. On the outer sides of the left - right side walls of the limiting groove 11, there is also a clamping and mating block 13. The secondary locking member 2 is installed in the limiting groove 11 and is clamped with the clamping and mating block 13 to limit the conductive terminal 3. The insulating body 1 is recessed with a plurality of fastening grooves 14 from top to bottom. In the left - right direction, each fastening groove 14 is located on one side of the corresponding terminal receiving groove 12 and communicates with the terminal receiving groove 12. In the up - down direction, the inner bottom surface of each fastening groove 14 is higher than the inner bottom surface of the corresponding terminal receiving groove 14. The fastening groove 14 is used to provide a space for the conductive terminal 3 to pass through.

[0037] As Figure 1 , Figure 3 and Figure 4 shown, the secondary locking member 2 is installed on the insulating body 1 and has a primary locking position and a final locking position. The secondary locking member 2 has a base 21 and two elastic arms 22 connected to the left and right sides of the base 21. On the side of each elastic arm 22 close to the other elastic arm 22, two clamping blocks 221 are arranged at intervals in the up - down direction, that is, two clamping blocks 221 are provided on the inner side of each elastic arm 22. The clamping blocks 221 are used to interact with the clamping and mating block 13 for clamping. The secondary locking member 2 is installed on the insulating body 1 in the direction from top to bottom. A stop block 23 also extends downward from the lower end of the base 21. In the left - right direction, the stop block 23 is located between the two elastic arms 22. The stop block 23 is received in the limiting groove 11 to stop the conductive terminal 3. A plurality of protrusions 231 protrude from the rear end of the stop block 23. When the protrusions 231 are used to cooperate with the rear side wall of the limiting groove 11, the secondary locking member 2 can be firmly installed on the insulating body 1.

[0038] As Figure 1 , Figure 3 and Figure 4As shown, when the secondary locking member 2 is in the initial locking position, only a small part of the stop block 23 extends into the limiting groove 11, and the front end of the rear side wall of the limiting groove 11 abuts against and restricts the downward displacement of the convex block 231. In the vertical direction, the lower clamping block 221 of each elastic arm 22 is clamped to the clamping and mating block 13 of the insulating body 1. At this time, the conductive terminal 3 can be inserted into the terminal receiving groove 12 from back to down, and the secondary locking member 2 does not restrict the movement of the conductive terminal 3. When the secondary locking member 2 moves from the initial locking position to the final locking position, the guiding inclined surface 111 guides the convex block 231 to move downward, so that the convex block 231 slides downward and rigidly abuts against the rear side wall of the limiting groove 11. Since the convex block 231 and the rear side wall of the limiting groove 11 are in rigid abutment at this time, when the secondary locking member 2 is in the initial position, the electrical connector 1000 cannot move the secondary locking member 2 to the final locking position only by the action of an external shaking force, but the operator must additionally apply a certain external force to the secondary locking member 2 to enable the secondary locking member 2 to move to the final locking position. Therefore, the convex block 231 can prevent the electrical connector 1000 from being affected by an external force during transportation, which may cause the secondary locking member 2 to move to the final locking position and damage the conductive terminal 3. When the secondary locking member 2 is in the final locking position, the stop block 23 is installed in the limiting groove 11 to stop the docking portion 31 from moving backward. The convex block 231 is located below the rear side wall of the limiting groove 11, and the projection of the convex block 231 in the vertical direction partially overlaps with the projection of the rear side wall of the limiting groove 11, that is, the convex block 231 crosses over the rear side wall of the limiting groove 11 from top to bottom, so that in the vertical direction, the convex block 231 is located below the rear side wall of the limiting groove 11 and partially overlaps with the rear side wall of the limiting groove 11. In the vertical direction, the upper clamping block 221 is clamped to the clamping and mating block 13 of the insulating body 1.

[0039] As Figure 1 and Figure 6As shown, each of the conductive terminals 3 sequentially has a pair of cylindrical docking portions 31 in the front-rear direction, a connecting portion 32 connected to the rear of the docking portion 31, and a wire pressing portion 33 located behind the connecting portion 32. The docking portion 31 has a bottom wall 311, a first side wall 312, and a second side wall 313 connecting opposite sides of the bottom wall 311. The first side wall 312 includes a front side portion 3121, an intermediate portion 3122, and a rear side portion 3123. The first side wall 312 has a plurality of blanking holes 3124. The front edge of the front side portion 3121 is the front edge of the conductive terminal 3. The rear edge of the front side portion 3121 is spaced from the intermediate portion 3122 through one of the blanking holes 3124. One blanking hole 3124 is provided on each of the front and rear sides of the rear side portion 3123, so that the front edge of the rear side portion 3123 is spaced from the intermediate portion 3122 through one of the blanking holes 3124, and the rear edge of the rear side portion 3123 is spaced from other parts of the conductive terminal 3 through one of the blanking holes 3124. Specifically, in this embodiment, the rear side of the rear side portion 3123 is spaced from the connecting portion 32 through one of the blanking holes 3124 (of course, in other embodiments, it may also be that the rear edge of the rear side portion 3123 is the rear edge of the docking portion 31, and the rear edge of the rear side portion 3123 is not connected to other parts of the conductive terminal 3. At this time, only one blanking hole 3124 is provided at the front edge of the rear side portion 3123 to be spaced from the intermediate portion 3122, and there is no need to provide the blanking hole 3124 at the rear edge of the rear side portion 3123).

[0040] As Figure 6 , Figure 8 , Figure 9 and Figure 10As shown, a first connecting wall 314 and a second connecting wall 315 are bent and extended from the upper edge of the first side wall 312 towards the second side wall 313. The second connecting wall 315 is located behind the first connecting wall 314, and the first connecting wall 314 is disposed opposite to the bottom wall 311 in the up and down direction. The second connecting wall 315 extends obliquely forward and upward, and the rear end of the second connecting wall 315 is lower than the middle part 3122 in the up and down direction. Specifically, the first connecting wall 314 is formed by bending and extending from the upper edge of the front side part 3121 towards the second side wall 313, that is, the upper end of the rear side part 3123 is connected to the second connecting wall 315. The second connecting wall 315 is formed by bending and extending from the upper edge of the rear side part 3123 towards the second side wall 313, that is, the upper end of the front side part 3121 is connected to the first connecting wall 314. The first connecting wall 314, the first side wall 312, the second side wall 313 and the bottom wall 311 jointly enclose an insertion opening 316 for the docking terminal to be inserted backward. A main elastic piece 317 extends and bends downward from one end of the first connecting wall 314 in the front and rear direction. The lower surface of the main elastic piece 317 has a contact area 3171. A secondary elastic piece 318 is bent and extended from one end of the second connecting wall 315 close to the main elastic piece 317. The secondary elastic piece 318 partially overlaps with the main elastic piece 317 in the up and down direction, and the middle part 3122 shields the contact area 3171 of the main elastic piece 317 in the left and right direction. Specifically, in this embodiment, the main elastic piece 317 is formed by bending and extending directly downward from the rear end of the first connecting wall 314, and the secondary elastic piece 318 is formed by bending and extending from the front end of the second connecting wall 315 towards the main elastic piece 317. The front side of the secondary elastic piece 318 overlaps with the front part of the main elastic piece 317 in the up and down direction.

[0041] As Figure 10 shown, the main elastic piece 317 is a cantilever beam, and the main elastic piece 317 is formed by bending and extending directly downward from the rear end of the first connecting wall 314, and the contact area 3171 is close to the free end of the main elastic piece 317. The contact area 3171 is a contact convex hull formed by tearing from top to bottom for docking with the docking terminal.

[0042] As Figure 8 、 Figure 9 and Figure 10As shown, the auxiliary elastic piece 318 is a cantilever beam and is formed by multiple bends starting from the front end of the second connecting wall 315. Specifically, the auxiliary elastic piece 318 has a first bending section 3181 that bends and extends forward from the front end of the second connecting wall 315, a second bending section 3182 that bends and extends forward from the front end of the first bending section 3181, and an abutting section 3183 that extends downward and bends from the front end of the second bending section 3182. When viewed in the up-down direction, the first bending section 3181 is misaligned with the main elastic piece 317, the second bending section 3182 and the abutting section 3183 at least partially overlap with the main elastic piece 317, and the abutting section 3183 is used to abut against the main elastic piece 317. The first bending section 3181 has a first bending point 31811, the second bending section 3182 has a second bending point 31821, the abutting section 3183 has a free end 31831, and the free end 31831 is the free end of the auxiliary elastic piece 318. On the upper surface of the auxiliary elastic piece 318, on the side close to the second side wall 313 in the left-right direction, there is a relief chamfer 3184, and the relief chamfer 3184 is used to provide relief for other parts of the conductive terminal 3, so as to prevent the auxiliary elastic piece 318 from scratching other parts of the conductive terminal 3 when being displaced upward under the pressing of the main elastic piece 317.

[0043] As Figure 1 , Figure 7 , Figure 9 and Figure 10As shown, a top wall 319 is connected to one side of the second side wall 313. The top wall 319 is located above the first connecting wall 314. The top wall 319 and the second side wall 313 are jointly torn to form a locking arm 3191, such that the locking arm 3191 has an upper extension 31911 and a side extension 31912 connected to one side of the upper extension 31911. An upper blocking surface 31913 is provided at the rear edge of the upper extension 31911, and a side blocking surface 31914 is provided at the rear edge of the side extension 31912. The locking arm 3191 can be elastically deformed in the left - right direction. The top wall 319 has a protection area 3192 and a relief groove 3193. The relief groove 3193 provides relief for the elastic deformation of the locking arm 3191. One end of the top wall 319 close to the first side wall 312 further bends downward and extends to form a stop portion 3194 and a blocked portion 3195 located behind the stop portion 3194. The stop portion 3194 aligns with the top end of the middle portion 3122 of the first side wall 312. The blocked portion 3195 is located above the second connecting wall 315 and extends backward beyond the second connecting wall 315. The second connecting wall 315 extends obliquely downward to avoid the blocked portion 3195, that is, the second connecting wall 315 extends obliquely downward in the front - to - back direction to avoid the blocked portion 3195. The blocked portion 3195 is used to cooperate with the secondary locking part 2.

[0044] As Figure 6 and Figure 7 shown, the docking portion 31 further has an anti - misalignment portion 3131. One end of the anti - misalignment portion 3131 is connected to the bottom wall 311, and the other end is torn from the front end of the second side wall 313 and bends downward and extends. The second side wall 313 also forms a notch 3132 through tearing, and in the left - right direction, the notch 3132 is disposed opposite to the front side portion 3121.

[0045] As Figure 5 、 Figure 6 、 Figure 9 and Figure 10As shown, the anti-fooling portion 3131 is located in front of the locking arm 3191, and the locking arm 3191 is bent and extended from front to back and toward the side away from the secondary elastic piece 318. One side edge of the relief groove 3193 is inclined to gradually move away from the end of the locking arm 3191, so as to provide a relief for the elastic deformation of the locking arm 3191. Specifically, along the direction from front to back, one side edge of the relief groove 3193 first gradually approaches the locking arm 3191, and then gradually moves away from the locking arm 3191. On the side of the secondary elastic piece 318 close to the locking arm 3191 in the left-right direction, a relief inclined surface 3184 is inclined and extended downward from the upper surface of the secondary elastic piece 318. The relief inclined surface 3184 is used to provide a relief for the elastic deformation of the locking arm 3191. When the docking terminal is inserted into the insertion port 316 from front to back, the secondary elastic piece 318 is pushed upward by the main elastic piece 317, and the relief inclined surface 3184 is used to prevent the secondary elastic piece 318 from scraping the side edge of the locking arm 3191 close to the secondary elastic piece 318 in the left-right direction when moving upward. The lower side edge of the side extension portion 31912 is bent downward and inward to form a hook 31915. When the conductive terminal 3 is inserted into the corresponding terminal receiving groove 12, the locking arm 3191 extends into the latching groove 14, and the rear ends of the upper blocking surface 31913, the side blocking surface 31914 and the hook 31915 are all in contact with the inner wall surface of the latching groove 14. In this way, the contact area between the locking arm 3191 and the insulating body 1 is increased, and further, when the conductive terminal 3 is accidentally pulled backward, the situation that the locking arm 3191 is folded back is avoided. There is a gap between the lower surface of the hook 31915 and the inner bottom surface of the latching groove 14 in the up-down direction, so as to prevent the hook 31915 from scraping and damaging the insulating body 1.

[0046] As Figure 9 and Figure 10 shown, the protection area 3192 and the relief groove 3193 are located on the upper surface of the docking portion 31, and the first bending point 31811 is exposed in the relief groove 3193. The protection area 3192 at least partially shields above the second bending point 31821 and above the abutting section 3183. When the docking terminal is not inserted into the insertion port 316, there is a gap between the abutting section 3183 and the main elastic piece 317 in the up-down direction, so as to prevent the main elastic piece 317 from being subjected to the abutting force of the secondary elastic piece 318 just at the beginning, which is likely to cause fatigue of the main elastic piece 317. The protection area 3192 at least partially shields above the free end portion 31831, and the distance between the free end portion 31831 and the protection area 3192 in the up-down direction is greater than the distance between the second bending point 31821 and the protection area 3192.

[0047] As Figures 1 to 10 shown, when the docking terminal is inserted into the insertion interface 316 from front to back, the docking terminal abuts against the contact area 3171, and the main elastic piece 317 abuts against the auxiliary elastic piece 318. In this embodiment, when the docking terminal is not inserted into the insertion interface 316, there is a gap between the main elastic piece 317 and the auxiliary elastic piece 318. Therefore, when the docking terminal is inserted into the insertion interface 316 from front to back, the main elastic piece 317 is first forced to move upward alone. When the main elastic piece 317 moves upward a certain distance, the main elastic piece 317 will abut against the auxiliary elastic piece 318 upward, and the auxiliary elastic piece 318 is pushed by the main elastic piece 317 and offsets upward, that is, the main elastic piece 317 and the auxiliary elastic piece 318 will move upward together (of course, in other embodiments, it may also be that when the docking terminal is not inserted into the insertion interface 316, the main elastic piece 317 has already contacted or abutted against the auxiliary elastic piece 318, and when the docking terminal is inserted into the insertion interface 316 from front to back, the main elastic piece 317 and the auxiliary elastic piece 318 are forced to offset upward together). When they continue to move upward to a certain position, since at least part of the protection area 3192 is located directly above the abutting position of the main elastic piece 317 and the auxiliary elastic piece 318, and the protection area 3192 shields above the second bending point 31821, the second bending point 31821 will abut against the protection area 3192. When the docking terminal continues to abut against the main elastic piece 317 upward, the front end of the free end 31831 will abut against the protection area 3192, so as to prevent the auxiliary elastic piece 318 from being reversely lapped on the main elastic piece 317.

[0048] In summary, the conductive terminal 3 of the present invention and the electrical connector 1000 provided with the conductive terminal 3 have the following beneficial effects:

[0049] (1) In the up and down direction, the secondary elastic piece 318 and the primary elastic piece 317 partially overlap. One side of the second side wall 313 of the docking portion 31 is connected to the top wall 319. The top wall 319 is located above the first connecting wall 314. The top wall 319 has the protection area 3192. When the docking terminal is inserted into the insertion opening 316 from front to back, the docking terminal abuts against the contact area 3171, the primary elastic piece 317 abuts against the secondary elastic piece 318, and the protection area 3192 is at least partially directly above the abutting position of the primary elastic piece 317 and the secondary elastic piece 318. The primary elastic piece 317 pushes the secondary elastic piece 318 upward. When the secondary elastic piece 318 is displaced upward to contact the protection area 3192, the protection area 3192 will block the further upward displacement of the secondary elastic piece 318 and the primary elastic piece 317, thereby avoiding the situation where the primary elastic piece 317 crosses over the secondary elastic piece 318 upward and causes the primary elastic piece 317 and the secondary elastic piece 318 to be reversely overlapped, ensuring good electrical connection between the conductive terminal 3 and the docking terminal, enabling multiple insertions and extractions, improving the service life of the electrical connector 1000. Moreover, the top wall 319 and the second side wall 313 are jointly torn to form the locking arm 3191, and the locking arm 3191 is formed with an upper blocking surface 31913 and a side blocking surface 31914. The locking arm 3191 can be elastically deformed in the left and right direction. In this way, the locking arm 3191 enhances the blocking strength through the settings of the upper blocking surface 31913 and the side blocking surface 31914, thereby avoiding the situation where the locking arm 3191 is folded back when the operator wrongly operates and pulls the conductive terminal 3 backward.

[0050] (2) The rear edge of the front side portion 3121 is spaced from the middle portion 3122 through a blanking hole 3124, so that both the first connecting wall 314 integrally connected to the primary elastic piece 317 and the front side portion 3121 have elasticity, thereby extending the force arm length of the primary elastic piece 317 and reducing the stress concentration and fatigue of the primary elastic piece 317; the front edge of the rear side portion 3123 is also spaced from the middle portion 3122 through a blanking hole 3124, so that both the second connecting wall 315 integrally connected to the secondary elastic piece 318 and the rear side portion 3123 have elasticity, thereby extending the force arm length of the secondary elastic piece 318 and reducing the stress concentration and fatigue of the secondary elastic piece 318. In this way, it is avoided that the primary elastic piece 317 and the secondary elastic piece 318 cannot be completely reset after the docking terminal is pulled out of the insertion opening 316 due to fatigue, resulting in the situation where the contact area 3171 of the primary elastic piece 317 cannot be docked with the docking terminal when the docking terminal is inserted again.

[0051] (3) When viewed in the up-and-down direction, the first bent section 3181 of the auxiliary elastic piece 318 is misaligned with the main elastic piece 317, and both the second bent section 3182 and the abutting section 3183 overlap at least partially with the main elastic piece 317, and the abutting section 3183 is used to abut against the main elastic piece 317; thus, compared with only having a single bend at one end close to the second connecting wall 315, when the auxiliary elastic piece 318 is subjected to an upward abutting force from the main elastic piece 317, the stress of the auxiliary elastic piece 318 is concentrated at the connection between the auxiliary elastic piece 318 and the second connecting wall 315. Therefore, the auxiliary elastic piece 318 will elastically shift upward with this connection as a fulcrum. In this way, when the auxiliary elastic piece 318 only elastically shifts upward by a small distance, the auxiliary elastic piece 318 will be in a substantially horizontal state. Thus, the downward abutting force of the auxiliary elastic piece 318 on the main elastic piece 317 will decrease, and even at this time, the auxiliary elastic piece 318 and the main elastic piece 317 only contact each other, and the auxiliary elastic piece 318 does not generate a downward abutting force on the main elastic piece 317, which will result in insufficient abutting force of the auxiliary elastic piece 318 on the main elastic piece 317. For the auxiliary elastic piece 318 with two bends, when the auxiliary elastic piece 318 is subjected to an upward abutting force, since the stress will be concentrated at the connection between the auxiliary elastic piece 318 and the second connecting wall 315, the auxiliary elastic piece 318 will elastically shift upward with this connection as a fulcrum. Before the second bent section 3182 abuts against the protection area 3192 at the second bending point 31821, the second bent section 3182 will not shift upward with the second bending point 31821 as a fulcrum. In other words, before the second bending point 31821 abuts against the protection area 3192, the second bent section 3182 always remains downwardly inclined, so that the second bent section 3182 will generate a downward abutting force on the main elastic piece 317. Therefore, it can be ensured that the auxiliary elastic piece 318 can exert sufficient abutting force on the main elastic piece 317, so that the main elastic piece 317 can stably abut against the docking terminal. Moreover, because the first bending point 31811 is exposed in the relief groove 3193, and the protection area 3192 at least partially shields above the second bending point 31821 and above the abutting section 3183. Thus, when the second bending point 31821 abuts against the protection area 3192 upward during the upward shift of the auxiliary elastic piece 318, the protection area 3192 will generate a downward abutting force on the auxiliary elastic piece 318, so that the main elastic piece 317 is also indirectly subjected to a downward abutting force. This not only avoids the reverse contact between the main elastic piece 317 and the auxiliary elastic piece 318, but also enables the main elastic piece 317 to stably dock with the docking terminal.

[0052] (4) The abutment section 3183 has the free end portion 31831, and the protection zone 3192 is at least partially shielded above the free end portion 31831, and the distance between the free end portion 31831 and the protection zone 3192 in the up-down direction is greater than the distance between the second bending point 31821 and the protection zone 3192; thus, the second bending point 31821 and the free end portion 31831 will abut against the protection zone 3192 in turn, thereby preventing the main spring piece 317 from being subjected to excessive abutment force at an instant during the insertion of the docking terminal, thereby causing elastic fatigue of the main spring piece 317.

[0053] (5) One end of the top wall 319 close to the first side wall 312 is bent downward and extends to have the stop portion 3194 and the blocked portion 3195 located behind the stop portion 3194. The setting of the stop portion 3194 and the blocked portion 3195 can prevent the top wall 319 from folding; the stop portion 3194 is aligned with the top end of the middle portion 3122, the blocked portion 3195 is located above the second connecting wall 315 and extends backward beyond the second connecting wall 315, and the second connecting wall 315 extends downward at an angle, and the rear end of the second connecting wall 315 in the up and down direction is lower than the middle portion 3122. In this way, the setting of the second connecting wall 315 not only enables the second connecting wall 315 to provide space for the blocked portion 3195 to prevent the blocked portion 3195 from being pressed down by external force and damaging the second connecting wall 315, but also The inclined setting of the connecting wall 315 facilitates the molding of the auxiliary spring piece 318, so that the auxiliary spring piece 318 and the middle part 3122 are staggered before the conductive terminal 3 is bent, thereby avoiding interference between the auxiliary spring piece 318 and the middle part 3122, reducing the stress and fatigue of the auxiliary spring piece 318; when the secondary locking member 2 is inserted downward into the limiting groove 11, the rear end of the second side wall 313, the rear end of the top wall 319 and the rear end of the blocked portion 3195 are used to resist the secondary locking member 2; in this way, on the basis of the primary locking of the locking arm 3191 and the insulating body 1, the locking of the secondary locking member 2 and the docking portion 31 is increased, and the blocked portion 3195 can also increase the contact surface area with the blocking block 23 of the secondary locking member 2, so that the blocking block 23 can stably limit the conductive terminal 3.

[0054] (6) The lower edge of the side extension portion 31912 bends downward and inward to form the hook 31915. When the conductive terminal 3 is inserted into the corresponding terminal receiving groove 12, the locking arm 3191 extends into the latching groove 14, and the rear ends of the upper blocking surface 31913, the side blocking surface 31914, and the hook 31915 are all in contact with the inner wall surface of the latching groove 14. In this way, the setting of the hook 31915 increases the contact area between the locking arm 3191 and the insulating body 1, thereby strengthening the latching ability of the locking arm 3191; there is a gap between the lower surface of the locking hook 31915 and the inner bottom surface of the latching groove 14 in the up and down direction, avoiding scratching and damaging the insulating body 1 by the hook 31915.

[0055] (7) When the secondary locking member 2 is in the initial locking position, the front end of the rear side wall of the limiting groove 11 abuts against and restricts the downward displacement of the protrusion 231. In the up and down direction, the lower clamping block 221 of each elastic arm 22 is clamped to the clamping and cooperating block 13 of the insulating body 1. When the secondary locking member 2 is in the final locking position, the stop block 23 is installed in the limiting groove 11 to stop the docking portion 31 from moving backward, the protrusion 231 is located below the rear side wall of the limiting groove 11, and in the up and down direction, the projection of the protrusion 231 and the projection of the rear side wall of the limiting groove 11 partially overlap. In the up and down direction, the upper clamping block 221 is clamped to the clamping and cooperating block 13 of the insulating body 1; in this way, the setting of the protrusion 231 can prevent the secondary locking member 2 from accidentally moving to the final locking position due to external force shaking in the initial locking position, thereby causing the situation that the conductive terminal 3 cannot be inserted into the terminal receiving groove 12.

[0056] The above detailed description is only for the description of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of this creative specification and drawings are included in the patent scope of this creation.

Claims

1. A conductive terminal for docking with a mating terminal, characterized in that Comprising: A cylindrical docking portion, the docking portion having a bottom wall and a first side wall and a second side wall connecting opposite sides of the bottom wall. A first connecting wall extends from the first side wall and bends towards the second side wall. In the vertical direction, the first connecting wall is disposed opposite to the bottom wall, and the first connecting wall, the first side wall, the second side wall and the bottom wall together enclose an insertion opening for the docking terminal to be inserted backward. A main elastic piece extends from the first connecting wall in the front-rear direction and bends downward. The lower surface of the main elastic piece has a contact area. A second connecting wall bends from the first side wall towards the second side wall. The second connecting wall is spaced from the first connecting wall in the front-rear direction. A sub-elastic piece extends from one end of the second connecting wall and bends towards the main elastic piece. In the vertical direction, the sub-elastic piece partially overlaps with the main elastic piece. One side of the second side wall is connected with a top wall. The top wall is located above the first connecting wall. The top wall and the second side wall are jointly torn to form a locking arm, so that the locking arm has an upper blocking surface and a side blocking surface, and the locking arm can be elastically deformed in the left-right direction. The top wall has a protection area; When the docking terminal is inserted into the insertion opening from front to back, the docking terminal abuts against the contact area, the main elastic piece abuts against the sub-elastic piece, and at least part of the protection area is located directly above the abutting position of the main elastic piece and the sub-elastic piece.

2. The conductive terminal according to claim 1, wherein: The first side wall includes a front side portion, a middle portion and a rear side portion. The upper end of the front side portion is connected to the first connecting wall. The upper end of the rear side portion is connected to the second connecting wall. The first side wall has a plurality of blanking holes. The rear edge of the front side portion is spaced from the middle portion through one of the blanking holes. The front edge of the rear side portion is spaced from the middle portion through one of the blanking holes.

3. The conductive terminal according to claim 2, characterized in that: One end of the top wall close to the first side wall bends downward and extends with a stop portion and a blocked portion located behind the stop portion. The stop portion is aligned with the top end of the middle portion. The blocked portion is located above the second connecting wall and extends backward beyond the second connecting wall. The second connecting wall extends obliquely downward to avoid the blocked portion, and the rear end of the second connecting wall is lower than the middle portion in the vertical direction. The middle portion shields one side of the contact area in the left-right direction.

4. The conductive terminal according to claim 2, wherein: The docking portion has an anti-fooling portion. One end of the anti-fooling portion is connected to the bottom wall, and the other end is formed by tearing from the front end of the second side wall and bending downward. The second side wall is torn to form a notch. In the left-right direction, the notch is disposed opposite to the front side portion.

5. The conductive terminal according to claim 1, wherein: The second connecting wall is located behind the first connecting wall. The auxiliary elastic piece has a first bending section that bends and extends forward from the front end of the second connecting wall and a second bending section that bends and extends forward from the front end of the first bending section, and an abutting section that extends downward and bends from the front end of the second bending section. When viewed in the up-down direction, the first bending section is misaligned with the main elastic piece, the second bending section and the abutting section both overlap with the main elastic piece, and the abutting section is used to abut against the main elastic piece. The first bending section has a first bending point, the second bending section has a second bending point, the top wall has a relief groove, the first bending point is exposed in the relief groove, and the protection area at least partially shields above the second bending point and above the abutting section.

6. The conductive terminal according to claim 5, wherein: The abutting section has a free end. The protection area at least partially shields above the free end, and the distance between the free end and the protection area in the up-down direction is greater than the distance between the second bending point and the protection area.

7. The conductive terminal according to claim 5, wherein: The locking arm is formed by bending and extending from front to back and away from the auxiliary elastic piece. One side edge of the relief groove is inclined to gradually move away from the end section of the locking arm to provide relief for the elastic deformation of the locking arm. On the side of the auxiliary elastic piece close to the locking arm in the left-right direction, there is a relief inclined surface that extends downward from the upper surface of the auxiliary elastic piece. When the docking terminal is inserted into the insertion opening from front to back, the auxiliary elastic piece is pushed upward by the main elastic piece, and the relief inclined surface is used to prevent the auxiliary elastic piece from scraping against the side edge of the locking arm close to the auxiliary elastic piece in the left-right direction.

8. An electrical connector for docking with a plurality of docking terminals, characterized in that, Including: An insulating body having a plurality of terminal receiving grooves penetrating in the front-back direction; A plurality of conductive terminals are respectively received in the plurality of terminal receiving grooves. Each conductive terminal has a cylindrical docking portion. The docking portion has a bottom wall and a first side wall and a second side wall connecting opposite sides of the bottom wall. A first connecting wall bends and extends from the first side wall toward the second side wall. The first connecting wall is disposed opposite to the bottom wall in the up-down direction. A main elastic piece bends and extends downward from one end of the first connecting wall in the front-back direction. The lower surface of the main elastic piece has a contact area. A second connecting wall bends and extends from the first side wall toward the second side wall. An auxiliary elastic piece bends and extends from the end of the second connecting wall close to the main elastic piece. The auxiliary elastic piece partially overlaps with the main elastic piece in the up-down direction. The top end of the second side wall is connected to a top wall. The top wall is located above the first connecting wall. The top wall and the second side wall are jointly torn to form a locking arm, so that the locking arm has an upper blocking surface and a side blocking surface, and the locking arm can elastically deform in the left-right direction. The top wall has a protection area; When the conductive terminal is docked with the docking terminal, the docking terminal abuts against the contact area, the main elastic piece abuts against the auxiliary elastic piece, and the protection area is at least partially located directly above the abutting position of the main elastic piece and the auxiliary elastic piece.

9. The electrical connector according to claim 8, wherein: The insulating body is recessed from top to bottom with a plurality of retaining grooves, each of the retaining grooves in the left-right direction is located at one side of the corresponding terminal receiving groove and is connected to the terminal receiving groove, and the inner bottom surface of each of the retaining grooves in the up-down direction is higher than the inner bottom surface of the corresponding terminal receiving groove, the locking arm has an upper extension portion and a side extension portion connected to one side of the upper extension portion, the upper blocking surface is arranged at the rear side edge of the upper extension portion, the side blocking surface is arranged at the rear side edge of the side extension portion, and the lower side edge of the side extension portion is bent downward and inward to form a hook, when the conductive terminal is inserted into the corresponding terminal receiving groove, the locking arm extends into the retaining groove, and the upper blocking surface, the side blocking surface and the rear end of the hook are all in contact with the inner wall surface of the retaining groove, and there is a gap between the lower surface of the hook and the inner bottom surface of the retaining groove in the up-down direction.

10. The electrical connector according to claim 8, wherein: A secondary locking component is further provided, and a limit groove is recessed from top to bottom on the insulating body, and the limit groove is longitudinally arranged in the left-right direction and connects the plurality of terminal receiving grooves, and one end of the top wall close to the first side wall is bent downward and extends to have a stop portion and a blocked portion located behind the stop portion, and the stop portion is aligned with the top end of the first side wall, and the blocked portion is located above the second connecting wall and extends backward beyond the second connecting wall, and when the secondary locking component is inserted downward into the limit groove, the rear end of the second side wall, the rear end of the top wall and the rear end of the blocked portion are used to resist the secondary locking component.

11. The electrical connector according to claim 10, characterized in that: The secondary locking member comprises a base and two elastic arms connected to the left and right sides of the base, each of the elastic arms is close to the other elastic arm and is spaced apart in the up and down directions with two holding blocks, a stop block is extended downwardly from the lower end of the base, and a rear end of the stop block is convexly provided with a plurality of protrusions. When the secondary locking member is in the initial locking position, the rear side wall of the limiting groove abuts and limits the downward displacement of the protrusion. The holding block located on the lower side of each of the elastic arms in the up and down direction is clamped on the insulating body, and the conductive terminal can be inserted into the terminal receiving groove in the front and back direction. When the secondary locking member is in the final locking position, the stop block extends into the terminal receiving groove to stop the docking portion from moving backward. The protrusion is located below the rear side wall of the limiting groove, and the projection of the protrusion in the up and down direction partially overlaps with the projection of the rear side wall of the limiting groove, and the holding block located on the upper side in the up and down direction is clamped on the insulating body.

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